Owners with GT6152's combo's and times please.

[TrooperT]

Thinking of purchaseing one of these turbo's. My setup is almost identical to F-1's. Please post any updated track times or dyno pulls along with info on boost #'s/ chip timing and type of fuel used to get your results. Any and all info is greatly appreciated. TIA Phil.

[murphster]

Finallly made it to the track with the GT6152 today. Went to Englishtown's test and tune session. Temps were in the low 40's, sunny day, and not many people at the track.

My best run of the day:

60' 1.54
1/8 7.24@92.5
1/4 11.51@112.2

All my other runs were 11.5s and 11.6s at around 112. Not a single bad run the whole day!

I'm running a 23/21 timing TurboTweak chip. To be safe, I just left the timing at base values. I did have to add more fuel in through the chip because it did seem to be running on the lean side. I ran 27lbs of boost for most of the runs. On one run I ran 25lbs of boost and it ran 0.1 and 1 mph slower in both the 1/8 and 1/4. I ran 28" MT DR's (275/60/15s) to try and keep the rpms down. I'm running a 3200 9" Art Carr converter (not locking it) that seems like it has a lot of slip on the top end. I was turning 5400 rpm through the traps. With this converter it seems like I only pick up 20mph from the 1/8 to the 1/4. I tried a tighter converter previously and the car picked up almost 24mph with the converter locked, but overall it was slower because the 1/8 ET and mph were down.

I kept the tires at 20psi and launched at 10lbs of boost on the 1.54 60'. The first run I launched at 5lbs of boost and kept launching harder each run. My 60 foots, in order, were 1.64, 1.61, 1.58, 1.56, and 1.54. I am also using an RJC boost controller. I also leaned out the first gear fuel in my TurboTweak chip, which seemed to help. I had 6psi in the air bags to help prevent the tires rubbing on the launch. With more tweaking and launching even harder, I think 1.4s could be in the future.

Here's the rest of my combo:

50# MSD injectors
stock IC with dutt neck
stock cam
stock heads
stock throttle body/plenum
stock MAF
HR bar
no front sway bar
stock boxed lower controls arms, stock uppers, both with poly bushings
Lakewood drag shocks 50/50 rear, 70/30 front
big mouth cold air intake
power plate
THDP
ATR dual 3" exhaust
no cat
Dynotech Hi-Pro trans
Walbro 340
Alkycontrol progressive alky kit, using methanol with 93 octane
data logging with Directscan, EGT
using S10 wheel cylinders to hold boost, line loc during burnout

Very happy with my runs today. It seems like the turbo did make a little more power running 27lbs boost compared to 25lbs boost. Hard to say how much more power though. With the stock cam I was already out of my power range at the rpms I was seeing. With another cam I might have picked up more. Plus I'm still using stock IC, throttle body, and heads. Might be flowing too much for my combo, hard to say.

Another thing I noticed is that I'm almost out of injector, even with the alky. After I added fuel through the chip, I was at 93% injector on the last run. Might have to bump up fuel pressure or add more alky if I run much faster.

The last thing is that I was still at a pretty safe timing of 23/21. I can probably run 26-27 timing in 1st/2nd gear, but not sure how much, if any, I should raise 3rd gear. I might try lowering the boost down to 25lbs and then add the timing, to give a little safety margin. My guess is that the timing will help more than the last couple lbs of boost with my stock IC/head combo.

Hopefully some others will have more feedback on this turbo. It worked good for me today!

[Blazer406]

Awesome runs for first time out this year..... I expect there is alot of power to be had with the timing bumped up.... What is your race weight? Do you have the front swaybar installed? How much difference in your opinion was the addition of the drag shocks over the stockers? is it a trade-off if they are for a daily driver? Your combo is nearly the same as mine except I am still running the stock turbo...... I am eventually going to put my big mouth cold air kit back on with the LS1 MAF meter....I hope to possibly go back to the track on the 18th..... will have some more stuff done... looking for some 1.5's on the 60'.... and some more MPH....

[murphster]

My car drives pretty good with my current shocks. I don't have a front sway bar, and with these shocks the front of the car tends to rise pretty easily on the street. I think it looks pretty cool. A less friendly daily shock would be a 90/10 front shock. This will make the front end even looser compared to the street/strip 70/30 front shock I have. The 90/10 will rise faster and lower slower, best for the drag strip. The 50/50 rear shock is more of a pretty standard shock. With the HR bar, the car handles very good, even without the front sway bar. Still tends to drift a little and can be a pain on a windy day though.

[SloGN]

hey guys i went out to Kinston dragway to meet up with some of the local buicks guys.

i drove the car down there 160 miles. i made to runs on street tires. the temp was in the low 50's with a slight breeze blowing.

first run was as follows 1.923 60 FT 7.80 1/8 @ 93.28 MPH @ 20psi that was in the left lane.


the second run was made in the right lane and the car broke the tires loose in the bottom of second. 1.921 60FT 9.28 1/8 @85.02 mph.

after that second run i decided not to play anymore since i was not hooking very good so i wanted to keep all my body panels nice a straight and not bump the wall


i can't wait till i get my 1.65 roller rockers on and then bolt some slicks on the car

still not too bad for driving to the track and and still putting up some high 7 second pass and a low 90's MPH first time out for the year

[Slo86GN]

Dang Slo......you have me itching to get Ol Gray back together and broken in, and hit the track. Those are some very good times for hard tires....the mph is killer for 20 psi and a stock cam. I'm curious how OG is gonna run since I have a few more mods (roller cam, 1.6 rockers, S-cover 6152, PTE fmic). Dang this is going to be a fun year.....

[murphster]

Ran the 6152 again this evening at E-town.

1st run:
60' 1.59
330 4.65
1/8 7.28
1/8 92.9
1000 9.57
1/4 11.53
1/4 114.5

2nd run:
60' 1.55
330 4.60
1/8 7.23
1/8 92.8
1000 9.52
1/4 11.48
1/4 112.4

3rd run:
60' 1.57
330 4.64
1/8 7.28
1/8 92.4
1000 9.59
1/4 11.55
1/4 114.2

Temps were in the high 30's, a bit chilly. All runs at 27lbs boost. First run was 26/23 timing, 2nd run 26/24 timing, and 3rd run 23/21 timing. Seems like the higher timing in 3rd didn't help.

I'm finally illegal! I was warned by two tech people that I need to get a cage!

[8tsixt]

looks good murphster. what injectors are you running?

[J Speak]

He running 50 pounders, Looks my oo9 with alky will definately not be enough. Thinking of going with 60lb's from fullthrottle. Great runs. I am hoping to get in the low 11 with same setup except for the powerstroke intercooler. Did you feel the 28" were to tall. Thanks for the info Justin

[murphster]

Yes, I'm running 50# MSDs. On those runs I was at around 80% injector with the alky (actually methanol). If you plan on running anything bigger than a 44/49 might as well go with the biggest injectors you can for the stock ECM. I think the chipmakers have a good handle on them and I don't remember seeing any complaints about driveablility.

I think with a better flowing intercooler, it will help reduce the pressure loss from the turbo to the intake. To be producing 27lbs boost, I might be making 30lbs at the turbo and losing 3 or more across the stock IC. As some people have mentioned in other threads, this might be out of the turbos efficiency range. Will be interesting to see how much a front mount will help me. I'll probably need a cage first though....

The 28" tires help out in two ways. First, it definitely seems to grip better. If I was on 26" tires I'd be spinning them more often in the cold weather. Secondly, it helps lower the rpm on the top end. Too much rpm will be out of the power range of the stock cam. Also helps to keep the rpm down it you want the engine to last longer. This will also depend on how efficient your converter is and whether you lock it or not. My converter is not very efficient. 26" tires are not an option unless I want to put it in overdrive (I don't).

My rpms are still too high and my mph is a tad low for my ETs. With a multidisc lockup converter I could probably shave a .1 or more off my ET. With a better 60' when it warms up I could be looking at 11.2s or so on a new converter. Not bad for a stock setup.

[8tsixt]

sorry to keep bugging you about your combo Murphster. i am asking all these questions because i am building a 4.1 motor. i will be using hyper pistons, ported stock heads, aftermarket cam, stock headers,stock i/c with big neck, gt6152s turbo i purchased from a board member, alky, & ?? injectors. i have a 3000l/u converter for this combo. lmk if this combo sounds like it all matches up together. it's still in the works due to $$. thanks for any info. Carlos R.

[jetmech]

murphster: what rpms are highest for stock cam.

[SloGN]

FRom the dyno sheet i have from my car witht he mods below and a stock cam. The power starts to fall off about 54-5500. But i think some 1.65 rockers will help the stock cam out.

[murphster]

Originally Posted by 8tsixt

sorry to keep bugging you about your combo Murphster. i am asking all these questions because i am building a 4.1 motor. i will be using hyper pistons, ported stock heads, aftermarket cam, stock headers,stock i/c with big neck, gt6152s turbo i purchased from a board member, alky, & ?? injectors. i have a 3000l/u converter for this combo. lmk if this combo sounds like it all matches up together. it's still in the works due to $$. thanks for any info. Carlos R.

I can't say much about the pistons/cam because mine are still stock. With the ported heads, you might want a better flowing intercooler such as a huge stock location or a front mount. As for injectors, I'd get the 60lb injectors for the stock ECM. With the alky, should get you well into 10's. For a GT6152 "S" turbo, the 3000 converter may not be enough. May want something in the 3300-3400 range. You could probably use the 3000 converter, just won't spool as fast.

As far as the stock cam, I think most people say the power starts to level off in the low 5000 rpms.

[jetmech]

Murphster: we have similar combos , i just ordered the 60#'s and extreme chip for the trans plus and 28x9 slicks wiil be used this year. we'll see what a 128k mile motor can do. thanks for the reply

[DonnieShort]

Originally Posted by jetmech

Murphster: we have similar combos , i just ordered the 60#'s and extreme chip for the trans plus and 28x9 slicks wiil be used this year. we'll see what a 128k mile motor can do. thanks for the reply

The Extreme Extender is for low z injectors. 60's are high z's. Might want to check on that so you don't have any possible trouble.

[jetmech]

mike told me he can do the extreme in the 60's. I thought the same thing but thats what he told me when i called him.

[Blazer406]

This is getting off topic.... but the extreme chip measures up to 768 gm/sec airflow..... where the regular extender measures 512 gm/sec. I don't know about you... but 512 gm/sec seems a plenty unless you are running a lot bigger inch stage II setup on lots of boost....... just my opinion...... but there isn't a big deal for 99% of the perople running a translator if they can't measure over 512 gm/sec for airflow. I am unaware if there are any other differences.

[Slo86GN]

I would have to use the Extreme for my combo due to the 60/65# Motrons, but also thinking about the Trans Pro/LM1 setup so I don't have to worry about the MAF readings pegging. Then again, I'm going to be moving a little bit of air....healthy ported irons, intake, GT6152S, XR-1 roller cam, PTE fmic. Also looking at going with a 65mm tb/plenum combo.....gotta get all the air flow I can....lol. It's definitely gonna be fun......and motor should be ready this weekend (knock on wood).

[DonnieShort]

Originally Posted by Blazer406

This is getting off topic.... but the extreme chip measures up to 768 gm/sec airflow..... where the regular extender measures 512 gm/sec. I don't know about you... but 512 gm/sec seems a plenty unless you are running a lot bigger inch stage II setup on lots of boost....... just my opinion...... but there isn't a big deal for 99% of the perople running a translator if they can't measure over 512 gm/sec for airflow. I am unaware if there are any other differences.

I was hitting 510gm/sec on my old set up, Bolt on only, stock unopened motor and PT61. You be suprised how many guys would be hitting that number.

Murphster- How much better can your 60' times get? Mid 1.5's is super on a stock type set up. I was in the same boat as you before I did my motor last year and at 11.40 with mid 1.5 60' times, it was done. Might could have seen 11.30 on a perfect day. At that time I knew I had to go into the motor if I were to go any faster.

[Blazer406]

Originally Posted by DonnieShort

I was hitting 510gm/sec on my old set up, Bolt on only, stock unopened motor and PT61. You be suprised how many guys would be hitting that number.

Murphster- How much better can your 60' times get? Mid 1.5's is super on a stock type set up. I was in the same boat as you before I did my motor last year and at 11.40 with mid 1.5 60' times, it was done. Might could have seen 11.30 on a perfect day. At that time I knew I had to go into the motor if I were to go any faster.

I stand corrected....I am still running the stock turbo... and when I had the stock chip (8 months ago....pre-alky).... it got in the 230's or maybe low 240's gm/sec at 13-14 psi with a stock engine....I never imagined you could double that figure with just bolt-ons ...... kinda gets me excited about putting on a bigger turbo...... I really want some 11's before I pull the stock turbo off (boost currently set at 23 psi)..... Currently I am in search of a 1.50 60' time.... that will be a good start......

[Marc87GN]

Originally Posted by DonnieShort

I was hitting 510gm/sec on my old set up, Bolt on only, stock unopened motor and PT61. You be suprised how many guys would be hitting that number.

Murphster- How much better can your 60' times get? Mid 1.5's is super on a stock type set up. I was in the same boat as you before I did my motor last year and at 11.40 with mid 1.5 60' times, it was done. Might could have seen 11.30 on a perfect day. At that time I knew I had to go into the motor if I were to go any faster.

You might have had the translator up a few points(richer mixture) because it's hard to hit that number with the WOT on zero if not impossible with the PT61 on an unopened motor. I have a pretty good flowing setup and have been out in 30 degree weather and the most I could hit was 502 with 21 psi and that was with the translator adding 8% more fuel. I believe it does this by inflating the MAF number to obtain a richer mixture. When I run it at 4%, the number dropped to the low/mid 400s. I know my setup flows alot better than an unopened motor so the 510 was probably due to the translator and not actual airflow.

I have well over 50 logs in Turbolink with the new and old setup and I pay very close attention to the MAF flow numbers.

[Blazer406]

Originally Posted by Marc87GN

You might have had the translator up a few points(richer mixture) because it's hard to hit that number with the WOT on zero if not impossible with the PT61 on an unopened motor. I have a pretty good flowing setup and have been out in 30 degree weather and the most I could hit was 502 with 21 psi and that was with the translator adding 8% more fuel. I believe it does this by inflating the MAF number to obtain a richer mixture. When I run it at 4%, the number dropped to the low/mid 400s. I know my setup flows alot better than an unopened motor so the 510 was probably due to the translator and not actual airflow.

I have well over 50 logs in Turbolink with the new and old setup and I pay very close attention to the MAF flow numbers.

I wondered if that could actually be the case.... but I kept my mouth shut...... I am impressed none-the-less if mid 400's are obtainable with bolt ons and a 61..... I'll probably get a GT6152S at some point..... I've found very little bad from anyone that has actually run this turbo..... I guess the debate is still there if an old school TE61 can make more power at 28-30 psi than the GT6152 is capable of... regardless of boost...... I am very interested to see that......

[murphster]

Originally Posted by DonnieShort

Murphster- How much better can your 60' times get? Mid 1.5's is super on a stock type set up. I was in the same boat as you before I did my motor last year and at 11.40 with mid 1.5 60' times..

I think I can get even better 60' times. I was leaving with 8lbs boost or so on most of my 1.5 60' times. I could feel that there was still a little lag off the line before the car really took off. I didn't want to leave with more boost because I did spin the couple of times I tried leaving with more boost, but this was in 35 degree weather or so. When the temps warm up to mid 50's or higher and the track gets a little stickier, I'm hoping I can leave with about 11lbs or so. Even though I've had great 60' times, it has more in it if the tires will hold.

With my chip I am able to pull fuel out of 1st gear only to help lean it out and hit quicker on the bottom. I'm also using an RJC boost controller to help spool up faster. I'm using an AC 9" 3200 converter which is probably way too loose though. There is still a slight delay when I leave the line and the car builds up boost to 20+ lbs. If I only leave with 5lbs of boost on the line I can feel this delay bog the car down. I will still get a 1.6 60', but it doesn't feel as good.

It will be a little while before I know if i can get 1.4s though. I'm probably going to throw a stock turbo on for a little bit and then get a cage sometime over the summer. Don't want to run another 11.4 and get kicked off the track for good.

[SloGN]

[QUOTE=DonnieShort]I was hitting 510gm/sec on my old set up, Bolt on only, stock unopened motor and PT61. You be suprised how many guys would be hitting that number.

MQUOTE]


I agree i have seen my car @ 21-22 psi hit over 400 grams a sec. so i would be on the verge of the chip @ 25-26 psi so i went and got the extreme and the extreme has got a few more function on the chips also

[SloGN]

Originally Posted by Blazer406

I wondered if that could actually be the case.... but I kept my mouth shut...... I am impressed none-the-less if mid 400's are obtainable with bolt ons and a 61..... I'll probably get a GT6152S at some point..... I've found very little bad from anyone that has actually run this turbo..... I guess the debate is still there if an old school TE61 can make more power at 28-30 psi than the GT6152 is capable of... regardless of boost...... I am very interested to see that......

well @ 19 psi with a ported set of heads and the stock cam i attained 350 RWHP @ 19 psi of boost with 21 degrees of timing on pump gas. mods are in the sig. I really think it's doable. If i only would have gone roller.

With a stock type set-up ( heads.cam) running insane boost levels you might get there.

I seen a bone stock 100k motor in a t with a set of injectors a te-45a a 9/11 3200 stall and a front mount go 6.90's @ 100 in the heat. boost was 31-32 psi to do it tho.

[SloGN]

Originally Posted by Blazer406

I stand corrected....I am still running the stock turbo... and when I had the stock chip (8 months ago....pre-alky).... it got in the 230's or maybe low 240's gm/sec at 13-14 psi with a stock engine....I never imagined you could double that figure with just bolt-ons ...... kinda gets me excited about putting on a bigger turbo...... I really want some 11's before I pull the stock turbo off (boost currently set at 23 psi)..... Currently I am in search of a 1.50 60' time.... that will be a good start......

A good running stock car with exhaust and a k/n fliter will max out the 255 limit @ stock boost levels.

[F-1]

See signature

85+ degress and 15-20 mph head wind.. I think she may have 10.60's in her..

[8tsixt]

Originally Posted by F-1

See signature

85+ degress and 15-20 mph head wind.. I think she may have 10.60's in her..

congrats on those times!! Carlos R.

[TurboK]

Originally Posted by F-1

See signature

85+ degress and 15-20 mph head wind.. I think she may have 10.60's in her..

Nice Run !

How much boost were you running and what octane fuel ?

[F-1]

Originally Posted by TurboK

Nice Run !

How much boost were you running and what octane fuel ?

VP C16 and 28#'s

[Blazer406]

Originally Posted by F-1

See signature

85+ degress and 15-20 mph head wind.. I think she may have 10.60's in her..

Daaaaaaaammmmmmnnnnn That is the best times I have seen from the newer GT6152 turbos.... more details please....

How much does your car weigh? What have you done to the suspension? What boost do you launch at? You running a wideband? If so.... what a/f ratio? Makes me want to sell some more of my old stuff and pull the trigger on one. Do you have the S cover with the 4" inlet/2-1/2" outlet? What was the temp the day you ran those times?

Congrats on the times.

[F-1]

Originally Posted by Blazer406

Daaaaaaaammmmmmnnnnn That is the best times I have seen from the newer GT6152 turbos.... more details please....

How much does your car weigh? What have you done to the suspension? What boost do you launch at? You running a wideband? If so.... what a/f ratio? Makes me want to sell some more of my old stuff and pull the trigger on one. Do you have the S cover with the 4" inlet/2-1/2" outlet? What was the temp the day you ran those times?

Congrats on the times.

Thanks!

Rear suspension is Bilstein Shocks, UMI non adjustable uppers and lowers (tubular). And That’s it… no airbags.. Stock sway bar… GBODY's upper front control arms in, alum bumper support brackets, no front sway, original shocks up front, and 3.5 alum driveshaft …. Car weighed in without me and just over a ¼ tank @ 3274. (sounded low to me but they assured me the digital scale was accurate)

I tune with a scanmaster and 02's.. No wideband. Usually between 760-780's on the big end. It is the standard GT6152E.. Not sure of launch boost.. I don't look at the guage, I dont think it is much more than 5# if that.

[Blazer406]

Whose chip? Do you like it? Are you locking the converter? if so....at what speed? Who did your heads? Do you know the flow figures? You are where I want to be at some point..... except with alky and 93 instead of race gas......


Again.... awesome times......

What turbo did you have before this one? How fast did it go?

I am trying to push the stocker on a stock longblock following in Ed Brewers steps..... similar combo to him.....I don't have enough track trips yet to get it out of my combo.... he managed 11.30's on the stock turbo before he took the next step......

Seeing times like yours makes me want to forget about the stocker.....

[F-1]

Any new updates with guys on this turbo.. I think I am going to play around and lose my stock plennum and TB.. maybe go to a PTE and a 65 or 70mm... Then take her back to the track..